/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.github.dapeng.api.lifecycle;


import java.util.ServiceLoader;

/**
 * @author ever
 */
public class LifecycleProcessorFactory {

    private static volatile LifecycleProcessor lifecycleProcessor;

    public static void createLifecycleProcessor(ClassLoader containerCl) {
        if (lifecycleProcessor == null) {
            synchronized (LifecycleProcessorFactory.class) {
                ServiceLoader<LifecycleProcessorFactorySpi> lifecycleProcessorFactorySpis = ServiceLoader.load(LifecycleProcessorFactorySpi.class, containerCl);
                assert lifecycleProcessorFactorySpis.iterator().hasNext();
                lifecycleProcessor = lifecycleProcessorFactorySpis.iterator().next().createInstance();
            }
        }
    }

    public static LifecycleProcessor getLifecycleProcessor() {
        return lifecycleProcessor;
    }
}
